Remove a bunch of unused webkitpy code from tool/, common/checkout/ and common/config/

Tools/Scripts/webkitpy/common/host.py

 # Copyright (c) 2010 Google Inc. All rights reserved.
 # Copyright (c) 2009 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import logging
 import os
 import sys
 
-from webkitpy.common.checkout import Checkout
 from webkitpy.common.checkout.scm.detection import SCMDetector
 from webkitpy.common.memoized import memoized
 from webkitpy.common.net import buildbot, web
 from webkitpy.common.net.buildbot.chromiumbuildbot import ChromiumBuildBot
 from webkitpy.common.system.systemhost import SystemHost
 from webkitpy.layout_tests.port.factory import PortFactory
 
 
 _log = logging.getLogger(__name__)
 
 
 class Host(SystemHost):
     def __init__(self):
         SystemHost.__init__(self)
         self.web = web.Web()
 
-        # FIXME: Checkout should own the scm object.
         self._scm = None
-        self._checkout = None
 
         # Everything below this line is WebKit-specific and belongs on a higher-level object.
         self.buildbot = buildbot.BuildBot()
 
         # FIXME: Unfortunately Port objects are currently the central-dispatch objects of the NRWT world.
         # In order to instantiate a port correctly, we have to pass it at least an executive, user, scm, and filesystem
         # so for now we just pass along the whole Host object.
         # FIXME: PortFactory doesn't belong on this Host object if Port is going to have a Host (circular dependency).
         self.port_factory = PortFactory(self)
 
@@ skipping 57 matching lines @@
                 from webkitpy.common.checkout.scm.git import Git
                 Git.executable_name = 'git.bat'
             except OSError, e:
                 _log.debug('Failed to engage git.bat Windows hack.')
 
     def initialize_scm(self, patch_directories=None):
         if sys.platform == "win32":
             self._engage_awesome_windows_hacks()
         detector = SCMDetector(self.filesystem, self.executive)
         self._scm = detector.default_scm(patch_directories)
-        self._checkout = Checkout(self.scm())
 
     def scm(self):
         return self._scm
 
-    def checkout(self):
-        return self._checkout
-
     def buildbot_for_builder_name(self, name):
         if self.port_factory.get_from_builder_name(name).is_chromium():
             return self.chromium_buildbot()
         return self.buildbot
 
     @memoized
     def chromium_buildbot(self):
         return ChromiumBuildBot()